Warren Regh C. Gabrillo III, M.D.
NPI 1982689295ActiveIndividual· Family Medicine· Upland, CA
Family Medicine (M.D.) in Upland, California, licensed in CA, with an NPI issued in December 2005. Their prescriptions cost Medicare Part D more than their services did: $165,104 for 2,484 claims, against $15,998 paid for services in 2024. Corcept Therapeutics was the largest of 15 companies reporting payments in 2025, $2,473 in all, mostly food and beverage. Lists San Antonio Regional Hospital as a hospital affiliation.
Overview
| NPI | 1982689295 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Dec 8, 2005 |
| Last updated in NPPES | Dec 10, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | A51794 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 59 |
|---|---|
| Services billed | 230 across 17 procedure codes |
| Paid by Medicare | $15,998 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,484 · 5,838 30-day fills |
|---|---|
| Patients | 185 |
| Total drug cost | $165,104 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 1979 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Hospital affiliation
- San Antonio Regional HospitalUpland, CA
Other facilities
- Nu Care Home HealthHome health agency · Rancho Cucamonga, CA
- Serenity Hospice CareHospice · Claremont, CA
Industry payments (Open Payments)
- 2025$2,473 · 36 payments from 15 companies
- 2024$1,877 · 32 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Corcept Therapeutics | $467.54 | 7 |
| Abbott Laboratories | $428.83 | 5 |
| Amgen Inc. | $420.62 | 6 |
| Pfizer Inc. | $197.26 | 4 |
| Exact Sciences Corporation | $162.82 | 3 |
What the 2025 payments were for
- Food and Beverage$2,464 · 35 payments
- Education$8.33 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other family medicine physicians in Upland
- 1063613578
- 1205987914
- 1285620443
- 1366488215
- 1417059957
- 1417984782
- 1497774954
- 1578791588
- 1619105541
- 1669677365
- 1689993313
- 1972696573
All 72 family medicine physicians in Upland · All family medicine physicians in California